Provided by: libtirpc-dev_1.3.4+ds-1.3_amd64 
NAME
getnetpath, setnetpath, endnetpath — get /etc/netconfig entry corresponding to NETPATH component
SYNOPSIS
#include <netconfig.h>
struct netconfig *
getnetpath(void *handlep);
void *
setnetpath(void);
int
endnetpath(void *handlep);
DESCRIPTION
The routines described in this page provide the application access to the system network configuration
database, /etc/netconfig, as it is “filtered” by the NETPATH environment variable (see environ(7)). See
getnetconfig(3) for other routines that also access the network configuration database directly. The
NETPATH variable is a list of colon-separated network identifiers.
The getnetpath() function returns a pointer to the netconfig database entry corresponding to the first
valid NETPATH component. The netconfig entry is formatted as a struct netconfig. On each subsequent call,
getnetpath() returns a pointer to the netconfig entry that corresponds to the next valid NETPATH component.
The getnetpath() function can thus be used to search the netconfig database for all networks included in
the NETPATH variable. When NETPATH has been exhausted, getnetpath() returns NULL.
A call to setnetpath() “binds” to or “rewinds” NETPATH. The setnetpath() function must be called before
the first call to getnetpath() and may be called at any other time. It returns a handle that is used by
getnetpath().
The getnetpath() function silently ignores invalid NETPATH components. A NETPATH component is invalid if
there is no corresponding entry in the netconfig database.
If the NETPATH variable is unset, getnetpath() behaves as if NETPATH were set to the sequence of “default”
or “visible” networks in the netconfig database, in the order in which they are listed.
The endnetpath() function may be called to “unbind” from NETPATH when processing is complete, releasing
resources for reuse. Programmers should be aware, however, that endnetpath() frees all memory allocated by
getnetpath() for the struct netconfig data structure.
RETURN VALUES
The setnetpath() function returns a handle that is used by getnetpath(). In case of an error, setnetpath()
returns NULL.
The endnetpath() function returns 0 on success and -1 on failure (for example, if setnetpath() was not
called previously). The nc_perror() or nc_sperror() function can be used to print out the reason for
failure. See getnetconfig(3).
When first called, getnetpath() returns a pointer to the netconfig database entry corresponding to the
first valid NETPATH component. When NETPATH has been exhausted, getnetpath() returns NULL.
AVAILABILITY
These functions are part of libtirpc.
SEE ALSO
getnetconfig(3), netconfig(5), environ(7)